Case studies

Nudging populations towards healthier eating behaviours: an innovative case study on salt reduction in China


To address the health challenges brought about by the changing food environment and high salt intake, WHO China, jointly with the National Institute for Nutrition and Health of China CDC and Tsinghua University, conducted an innovative study that applied nudge-based interventions to promote lower salt dish options on a Chinese meal delivery app in 2020-2022.

C4H in action: using data for targeted and inclusive communications for COVID-19 in Malaysia


WHO is working with health authorities and partners in Malaysia to apply the Communication for Health (C4H) approach, establishing two-way communication channels with communities and drawing on data intelligence to ensure that the thoughts, feelings and behaviours of everyone in Malaysia are at the centre of communication efforts.

“It takes a village” to reduce maternal and newborn mortality in Papua New Guinea


The World Health Organization Representative Office in Papua New Guinea used the Communication for Health (C4H) approach to improve health outcomes for mothers and babies.